CA1045797A - Method of fabricating compressed gas insulated cable - Google Patents
Method of fabricating compressed gas insulated cableInfo
- Publication number
- CA1045797A CA1045797A CA279,613A CA279613A CA1045797A CA 1045797 A CA1045797 A CA 1045797A CA 279613 A CA279613 A CA 279613A CA 1045797 A CA1045797 A CA 1045797A
- Authority
- CA
- Canada
- Prior art keywords
- sheath
- sectors
- spacer
- securing
- conductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/06—Gas-pressure cables; Oil-pressure cables; Cables for use in conduits under fluid pressure
- H01B9/0644—Features relating to the dielectric of gas-pressure cables
- H01B9/0666—Discontinuous insulation
Abstract
METHOD OF FABRICATING COMPRESSED
GAS INSULATED CABLE
ABSTRACT OF THE DISCLOSURE
A method of fabricating a compressed gas insulated cable which includes the steps of securing an electrical conductor to an insulating spacer; securing the spacer to a sheath section which forms a portion of circumference of the outer sheath of the gas insulated cable; and then seal-ingly securing the sheath sector together to form the outer shell.
GAS INSULATED CABLE
ABSTRACT OF THE DISCLOSURE
A method of fabricating a compressed gas insulated cable which includes the steps of securing an electrical conductor to an insulating spacer; securing the spacer to a sheath section which forms a portion of circumference of the outer sheath of the gas insulated cable; and then seal-ingly securing the sheath sector together to form the outer shell.
Description
BACKGROUND OF THE INVENTION
This invention relates generally to electrical con-ductors, and more particularly to a method of fabricating a compressed gas insulated cable.
Compressed gas insulated transmission lines are being used in an ever increasing scale in recent years due to the desirability of increasing safety, problems in acquiring right-of-way for overhead lines, and higher power loads required by growing metropolitan areas and growing demands for electrical energy. Compressed gas insulated transmission lines typically comprise a hollow sheath, a conductor in the sheath~ a plurality of solid insulating spacers which support the conductor, and a compressed gas such as sulfur hexa~luoride or the like in the ~heath to insulate the conductor from the sheath. The typical assembly has been fabricated from relatively short sections of hollow cylindrical ducts or tubes in which the conductor and lnsulators are inserted. This assembly is .. . . . . .
. ~ . ......... ...... .
. :; ~ . .
~45797 usually completed in the factory, and the sections are welded or otherwise secured -together in the field to form the transmission line. Gas barriers are provided at ~ .
intervals along the length of the assembly, and, after evacuation of the line, an insulating gas is forced into the . ~ -sheath under pressure. ~It is also known to provide a par~
ticle trap in compressed gas insula-ting transmission lines as lS disclosed in the patent issued June 2, 1970 to Trump, :
IJoS~ Patent No. 3,515,939. ,The particle trap of Trump is used to precipitate out of the insulating gas, particles of foreign matter which could adversely affect the breakdown voltage of the dielectric gas.
Probl~ms have arisen, however, in the use Oe such : compressed gas insulated cables. Two or more parts, the sheath and conductor, must be thoroughly cleaned separately and then assembled into the final units without in-troducing even the slightest amount of contamination. The clearance necessary to get the several parts together necessitates the use of folded or wedged type joints between the several :
parts, or purposely leaving the parts loose onplastic pads. These methods require several sequen-tial operatlons over a period of time during which contam-lnation can be produced or en~er c~nd the use o~ expensLve tubing w:ith special mounting provisions or complicated mounting rings which ~it inside the sheath tubing.
One sheath which has been designed to overcome these problems is illustrated in the U.S~ Patent issued February ~, 1975 to Fox et al, U.S. Patent No. 3,86~,507.
In the Fox et al patent, the outer sheath is constructed 30 from sheath sectors which mate together to form the outer ~-cylindrical sheath.
However, thls sheath is not entirely satisfactory, as the assembly in the field of the gas insulated cable is not very efficient, and alignment and assembly problems may occur.
SUMMARY OF THE INVENTION
The aforementioned problems of the prior art are eliminated by this invention by providing for a method of fabricating a compressed gas insulated cable, which cable includes an electrical conductor with a spacer supporting the conductor within a substantially cylindrical outer sheath. The cable also includes an insulating gas elec-trlcally insulating the conductor from the sheath~ and the sheath ls ~ormed of a plurality o~ sheath sectors each of which ~orms a portion of the circumference of the sheath.
The fabrication method comprises attaching the conductor to the spacer, securing the spacer to one of the sheath sectors, and sealingly securing the sheath sectors together to form the outer sheath.
BRIE~ DESCRIPTION OF THE DR~WINGS
Re~erence is now made to the description o~ the pre~err0d embodlment, :lllu~traked in the accompanyin~
drawings, in which:
Figure 1 is a cross-sectional view through a com-pressed ~as insulated, single phase cable;
Figure 2 is a cross-sectional view through a com-pressed gas insulated, multiphase cable;
Figure 3 is a longitudinal view taken along lines III-III of either Figures 1 or 2, and Figure 4 is a detailed view of a ~oint between two ~ -ad~acent sheath sections of the cable illustrated in Fig. 3.
DESCRIPTION 0~ THE PREFERRED EMBODIMENT
Referring now more particularly to Figure 1, there i~ illustrated a single-conductor compressed gas lnsulated cable fabricated according to the method of this invention.
An electrical conductor 10 is disposed within the outer sheath 12, and an insulating gas 14, such as sulfur hexa- -~
fluoride, is disposed within the sheath 12. The insulating gas 14 electrically insulates the conductor 10 ~rom the outer sheath 12. The electrical conductor 10 is disposed within an opening 16 formed within a post spacer 18. The post spacer 18 functions to support the electrical con-ductor 10 within the cylindrical outer sheath 12.
The outer sheath 12 i9 comprised of two sheath sectors 20 and 22. Each sheath sector 20, 22 forms a porti:on of the circumference o~ sheath 12. To one sheath sector 20 is secured, by welding, a mounting plate 24.
The other sheath section 22 has formed therein, such as during the extruslon of the sheath sectors 20, 22, a longitudinal slot 26 whose function is the trapping of any ¢ontaminating particles (not shown) which may be present withln the in~ulating gas 14 and which may cau~e an elec-trical breakdown. q'he post spacer 18 is secured to the mounting plate 24 by means such as bolts (not shown).
Referring now to ~igure 3, therein is shown a longitudlnal view o~ the cable illustrated in Figure 1.
~ can be seen, a plurality of post spacers 24 supports the elongated electrical conductor 10. One end of the electrical conductor has a ~oint socket 28, and the opposite end of the conductor has a ~oint plug 30. The ~oint socket 28 and plug 30 function to enable two .. . . . . .. .
r ~
like-sectlons o~ electrical conductor to be connected together to form a compressed gas insulated transmlssion line or cable. As shown, all the post spacers 18 are secured to the outer sheath 12 by the mounting plates 24. : .
The ~oint plug 30 from one conductor 10 is inserted into the ~oint socket 28 of adjoining sections, thereby making electrical contact and maintaining electrical contlnuity between conductors 10.
The compressed gas insulated cable illustrated in Figure 1 was fabricated according to the method of this invention. The electrical conductor 10 was inserted within the opening 16 within the post spacer 18. The post spacer 18, in turn, was secured to the outer sheath 12. More .
speclfically, the post spacer 18 is secured to the mounting plate 24, which mounting plate has been welded to the sheath sector 20. Although the method has been described as inserting the conductor 10 into the post spacer 18 prior to securing the spacer 18 to the sheath sector 20, it ls to be understood that the order of these two steps may be reversed and ~he post spacer 18 may be secured to the sheath sector 20 prlor to insertion o~ the electrical conduc~tor 10 lnto the openinG 16. A~ter khe conductor 10 has been inserted into the opening 16 of the post spacer 18, and the post spacer 18 has been secured to the sheath ~ector 20, khe two sheath sectors 20, 22 are seallngly secured to each other to form the outer sheath 12. The two sheath sectors 20, 22 are secured together at their ~oint 32 preferably by means of the weld 3~1.
The fabrication of the compressed gas insulated cable ln th:s manner pr~vide numerous advantages: the , ~ " . . .
~L~)4579~ ;:
integrity and cleanliness o~ the sheath sectors and conduct-or assembly can be ascertained ~ust prlor to the final assembly~ the conductor assembly is simply and securely mounted to the sheath 12 eliminating most tolerance and assembly problems and reducing vibration during shipping;
the sector extrusions are less expensive than extruded, seam or spiral welded tubing; and the cost of the support spacer is reduced since it is only a single post with a simple mounting plate.
Referring now to Figure 2, therein is illustrated a multiconductor compressed gas insulated transmission line. The transmission line, as before, comprises an outer sheath 12 housing a plurality, in this case three, of electrical conductors 10. The conductors 10 are support-ed within the outer sheath 12 by the post spacers 18. The conductors 10, similar to that of ~igure 1, are inserted within openings 16 formed within the post spacers 18. The post spacers 18 are secured to mounting plates 24, whlch mounting plates 24 are in turn secured to the sheath sectors 36, 38, and 40. The sheath sectors 36, 38 and 40 like the sheath sectors 20, 22 Q~ gure 1, each form a portion o~ the circum~erenoe o~ the substantially cylindrical outer sheath 12. The sheath sectors 36, 38 and 40 illustrated each has the same circumferential length, or distance along an arc, as each other sheath sector. ~he number of sheath sectors 36, 38 and 40, is equal to the number of conductors 10, and the spacers 18 are positioned in a central location along the circumfer-ential length of each spacer. By so positioning the spacers, the three phases o the electrical transmission .
~~4~7~7 system are each spaced e~ui-distantly apart.
The method of fabricating the transmission line of Figure 2 is similar to that described ln connection with the single conductor line o~ Figure 1. The conductors 10 are inserted into the openings 16 formed within the post spacer 18 associated with each conductor 10. The post spacers 18 are, in turn, secured to the sheath sector 36, 38 and 40 associated with that post spacer 18. After the conductors 10 have been inserted into the openings 16 and the spacers 18 secured to the sheath sectors 36, 38, and 40 the sheath sectors 36, 38 and 40 are sealingly secured together to form the cylindrical outer sheath 12.
Figure 4 illustrates one method o~ Joining the sheath sectors 36, 38, and 40 together which also functions as a particle trap.
One sheath sector, for example 36, has a tongue 42 at one end thereof, and the adjoining sheath sector 38 has a groove 44 therein ad~acent the tongue 42 o~ the ad~acent sheath sector 36. The tongue 42 fits within the groove 4~ of the ad~oln~ng sheath sector, wlth a seal ~6 also being present wlthin the groove 1~4, ~he two sheath ~ector~ 36, 38 are ~olned together by the weld 48.
The seal 46 and the tongue and groove arrangement prevents any weld splatter from the weld 48 from entering wlthin the outer sheath 12. Alternately, a simple overlap ~oint with seal (not shown) may be used.
The interior side 50, 52 of sheath sectors 36, 38 respectively are formed at their terminations so as to form a longitudinal slot 54 therebetween. This longitud-inal slot 54 can then function as a continuous particle ~4~9~ ~
trap to minimize the effect of loose conducting particles on the insulating gas 14. If so desired instead of utilizing the ~oint between the sheath sectors as a particle trap other types of particle traps may be affixed to the interior of the sheath sectors prior to their ~oint~
ure.
Therefore, it can be seen that this invention pro-vides a method for fabricating a compressed gas insulated cable which minimizes the cost of the fabrication and 10 additionally provides more efficient contamination control than was previously obtainable. .
. " ~
8- :
, ., ,
This invention relates generally to electrical con-ductors, and more particularly to a method of fabricating a compressed gas insulated cable.
Compressed gas insulated transmission lines are being used in an ever increasing scale in recent years due to the desirability of increasing safety, problems in acquiring right-of-way for overhead lines, and higher power loads required by growing metropolitan areas and growing demands for electrical energy. Compressed gas insulated transmission lines typically comprise a hollow sheath, a conductor in the sheath~ a plurality of solid insulating spacers which support the conductor, and a compressed gas such as sulfur hexa~luoride or the like in the ~heath to insulate the conductor from the sheath. The typical assembly has been fabricated from relatively short sections of hollow cylindrical ducts or tubes in which the conductor and lnsulators are inserted. This assembly is .. . . . . .
. ~ . ......... ...... .
. :; ~ . .
~45797 usually completed in the factory, and the sections are welded or otherwise secured -together in the field to form the transmission line. Gas barriers are provided at ~ .
intervals along the length of the assembly, and, after evacuation of the line, an insulating gas is forced into the . ~ -sheath under pressure. ~It is also known to provide a par~
ticle trap in compressed gas insula-ting transmission lines as lS disclosed in the patent issued June 2, 1970 to Trump, :
IJoS~ Patent No. 3,515,939. ,The particle trap of Trump is used to precipitate out of the insulating gas, particles of foreign matter which could adversely affect the breakdown voltage of the dielectric gas.
Probl~ms have arisen, however, in the use Oe such : compressed gas insulated cables. Two or more parts, the sheath and conductor, must be thoroughly cleaned separately and then assembled into the final units without in-troducing even the slightest amount of contamination. The clearance necessary to get the several parts together necessitates the use of folded or wedged type joints between the several :
parts, or purposely leaving the parts loose onplastic pads. These methods require several sequen-tial operatlons over a period of time during which contam-lnation can be produced or en~er c~nd the use o~ expensLve tubing w:ith special mounting provisions or complicated mounting rings which ~it inside the sheath tubing.
One sheath which has been designed to overcome these problems is illustrated in the U.S~ Patent issued February ~, 1975 to Fox et al, U.S. Patent No. 3,86~,507.
In the Fox et al patent, the outer sheath is constructed 30 from sheath sectors which mate together to form the outer ~-cylindrical sheath.
However, thls sheath is not entirely satisfactory, as the assembly in the field of the gas insulated cable is not very efficient, and alignment and assembly problems may occur.
SUMMARY OF THE INVENTION
The aforementioned problems of the prior art are eliminated by this invention by providing for a method of fabricating a compressed gas insulated cable, which cable includes an electrical conductor with a spacer supporting the conductor within a substantially cylindrical outer sheath. The cable also includes an insulating gas elec-trlcally insulating the conductor from the sheath~ and the sheath ls ~ormed of a plurality o~ sheath sectors each of which ~orms a portion of the circumference of the sheath.
The fabrication method comprises attaching the conductor to the spacer, securing the spacer to one of the sheath sectors, and sealingly securing the sheath sectors together to form the outer sheath.
BRIE~ DESCRIPTION OF THE DR~WINGS
Re~erence is now made to the description o~ the pre~err0d embodlment, :lllu~traked in the accompanyin~
drawings, in which:
Figure 1 is a cross-sectional view through a com-pressed ~as insulated, single phase cable;
Figure 2 is a cross-sectional view through a com-pressed gas insulated, multiphase cable;
Figure 3 is a longitudinal view taken along lines III-III of either Figures 1 or 2, and Figure 4 is a detailed view of a ~oint between two ~ -ad~acent sheath sections of the cable illustrated in Fig. 3.
DESCRIPTION 0~ THE PREFERRED EMBODIMENT
Referring now more particularly to Figure 1, there i~ illustrated a single-conductor compressed gas lnsulated cable fabricated according to the method of this invention.
An electrical conductor 10 is disposed within the outer sheath 12, and an insulating gas 14, such as sulfur hexa- -~
fluoride, is disposed within the sheath 12. The insulating gas 14 electrically insulates the conductor 10 ~rom the outer sheath 12. The electrical conductor 10 is disposed within an opening 16 formed within a post spacer 18. The post spacer 18 functions to support the electrical con-ductor 10 within the cylindrical outer sheath 12.
The outer sheath 12 i9 comprised of two sheath sectors 20 and 22. Each sheath sector 20, 22 forms a porti:on of the circumference o~ sheath 12. To one sheath sector 20 is secured, by welding, a mounting plate 24.
The other sheath section 22 has formed therein, such as during the extruslon of the sheath sectors 20, 22, a longitudinal slot 26 whose function is the trapping of any ¢ontaminating particles (not shown) which may be present withln the in~ulating gas 14 and which may cau~e an elec-trical breakdown. q'he post spacer 18 is secured to the mounting plate 24 by means such as bolts (not shown).
Referring now to ~igure 3, therein is shown a longitudlnal view o~ the cable illustrated in Figure 1.
~ can be seen, a plurality of post spacers 24 supports the elongated electrical conductor 10. One end of the electrical conductor has a ~oint socket 28, and the opposite end of the conductor has a ~oint plug 30. The ~oint socket 28 and plug 30 function to enable two .. . . . . .. .
r ~
like-sectlons o~ electrical conductor to be connected together to form a compressed gas insulated transmlssion line or cable. As shown, all the post spacers 18 are secured to the outer sheath 12 by the mounting plates 24. : .
The ~oint plug 30 from one conductor 10 is inserted into the ~oint socket 28 of adjoining sections, thereby making electrical contact and maintaining electrical contlnuity between conductors 10.
The compressed gas insulated cable illustrated in Figure 1 was fabricated according to the method of this invention. The electrical conductor 10 was inserted within the opening 16 within the post spacer 18. The post spacer 18, in turn, was secured to the outer sheath 12. More .
speclfically, the post spacer 18 is secured to the mounting plate 24, which mounting plate has been welded to the sheath sector 20. Although the method has been described as inserting the conductor 10 into the post spacer 18 prior to securing the spacer 18 to the sheath sector 20, it ls to be understood that the order of these two steps may be reversed and ~he post spacer 18 may be secured to the sheath sector 20 prlor to insertion o~ the electrical conduc~tor 10 lnto the openinG 16. A~ter khe conductor 10 has been inserted into the opening 16 of the post spacer 18, and the post spacer 18 has been secured to the sheath ~ector 20, khe two sheath sectors 20, 22 are seallngly secured to each other to form the outer sheath 12. The two sheath sectors 20, 22 are secured together at their ~oint 32 preferably by means of the weld 3~1.
The fabrication of the compressed gas insulated cable ln th:s manner pr~vide numerous advantages: the , ~ " . . .
~L~)4579~ ;:
integrity and cleanliness o~ the sheath sectors and conduct-or assembly can be ascertained ~ust prlor to the final assembly~ the conductor assembly is simply and securely mounted to the sheath 12 eliminating most tolerance and assembly problems and reducing vibration during shipping;
the sector extrusions are less expensive than extruded, seam or spiral welded tubing; and the cost of the support spacer is reduced since it is only a single post with a simple mounting plate.
Referring now to Figure 2, therein is illustrated a multiconductor compressed gas insulated transmission line. The transmission line, as before, comprises an outer sheath 12 housing a plurality, in this case three, of electrical conductors 10. The conductors 10 are support-ed within the outer sheath 12 by the post spacers 18. The conductors 10, similar to that of ~igure 1, are inserted within openings 16 formed within the post spacers 18. The post spacers 18 are secured to mounting plates 24, whlch mounting plates 24 are in turn secured to the sheath sectors 36, 38, and 40. The sheath sectors 36, 38 and 40 like the sheath sectors 20, 22 Q~ gure 1, each form a portion o~ the circum~erenoe o~ the substantially cylindrical outer sheath 12. The sheath sectors 36, 38 and 40 illustrated each has the same circumferential length, or distance along an arc, as each other sheath sector. ~he number of sheath sectors 36, 38 and 40, is equal to the number of conductors 10, and the spacers 18 are positioned in a central location along the circumfer-ential length of each spacer. By so positioning the spacers, the three phases o the electrical transmission .
~~4~7~7 system are each spaced e~ui-distantly apart.
The method of fabricating the transmission line of Figure 2 is similar to that described ln connection with the single conductor line o~ Figure 1. The conductors 10 are inserted into the openings 16 formed within the post spacer 18 associated with each conductor 10. The post spacers 18 are, in turn, secured to the sheath sector 36, 38 and 40 associated with that post spacer 18. After the conductors 10 have been inserted into the openings 16 and the spacers 18 secured to the sheath sectors 36, 38, and 40 the sheath sectors 36, 38 and 40 are sealingly secured together to form the cylindrical outer sheath 12.
Figure 4 illustrates one method o~ Joining the sheath sectors 36, 38, and 40 together which also functions as a particle trap.
One sheath sector, for example 36, has a tongue 42 at one end thereof, and the adjoining sheath sector 38 has a groove 44 therein ad~acent the tongue 42 o~ the ad~acent sheath sector 36. The tongue 42 fits within the groove 4~ of the ad~oln~ng sheath sector, wlth a seal ~6 also being present wlthin the groove 1~4, ~he two sheath ~ector~ 36, 38 are ~olned together by the weld 48.
The seal 46 and the tongue and groove arrangement prevents any weld splatter from the weld 48 from entering wlthin the outer sheath 12. Alternately, a simple overlap ~oint with seal (not shown) may be used.
The interior side 50, 52 of sheath sectors 36, 38 respectively are formed at their terminations so as to form a longitudinal slot 54 therebetween. This longitud-inal slot 54 can then function as a continuous particle ~4~9~ ~
trap to minimize the effect of loose conducting particles on the insulating gas 14. If so desired instead of utilizing the ~oint between the sheath sectors as a particle trap other types of particle traps may be affixed to the interior of the sheath sectors prior to their ~oint~
ure.
Therefore, it can be seen that this invention pro-vides a method for fabricating a compressed gas insulated cable which minimizes the cost of the fabrication and 10 additionally provides more efficient contamination control than was previously obtainable. .
. " ~
8- :
, ., ,
Claims (11)
1. A method of fabricating a compressed gas insulated cable including a cylindrical electrical con-ductor disposed within a cylindrical opening formed in a post spacer, said spacer supporting said conductor within a substantially cylindrical outer sheath, and an insulating gas electrically insulating said conductor from said sheath, said sheath being formed of a plurality of sheath sectors each of which forms a portion of the circumference of said sheath, said method comprising:
inserting said conductor within said post spacer opening;
securing said spacer to one of said sheath sectors;
and sealingly securing said sheath sectors together to form said outer sheath.
inserting said conductor within said post spacer opening;
securing said spacer to one of said sheath sectors;
and sealingly securing said sheath sectors together to form said outer sheath.
2. The method according to claim 1 wherein said sheath sectors are extruded.
3. The method according to claim 1 including installing particle trapping means adjacent one of said sheath sectors for the trapping of particles.
4. The method according to claim 1 including welding a mounting plate to one of said sheath sectors;
and securing said spacer to said mounting plate.
and securing said spacer to said mounting plate.
5. The method according to claim 1 wherein the step of inserting said conductor within said post spacer opening occurs prior to the step of securing said spacer to one of said sheath sections.
6. The method according to claim 1 including forming a longitudinal slot within one of said sheath sectors for the trapping of particles.
7. A method of fabricating a multi-conductor compressed gas insulated transmission line wherein a plurality of cylindrical electrical conductors are supported within a generally outer cylindrical sheath by a plurality of post spacers with an insulating gas electrically insulating said conductors from said sheath and from each other, said sheath being formed from a plurality of sheath sectors each of which forms a portion of the circumference of said sheath, each of said conductors having a spacer and a sheath sector associated therewith, said conductors being disposed within cylindrical openings formed within said post spacers, said method comprising:
inserting each of said conductors within the opening formed in said post spacer associated therewith;
securing each of said spacers to said sheath sector associated therewith; and sealingly securing said sheath sectors together to form said outer sheath.
inserting each of said conductors within the opening formed in said post spacer associated therewith;
securing each of said spacers to said sheath sector associated therewith; and sealingly securing said sheath sectors together to form said outer sheath.
8. The method according to claim 7 including welding a mounting plate to each of said sheath sectors having a post spacer associated therewith; and securing said spacers to said mounting plates.
9. The method according to claim 7 wherein the number of sheath sectors is equal to the number of electrical conductors.
10. The method according to claim 9 wherein each sheath sector has the same circumferential length as each other sheath sector; and each spacer is centrally positioned along said sheath sector associated therewith, wherein said con-ductors are spaced equi-distantly apart.
11. The method according to claim 7 including joining said sheath sectors together such that a longi-tudinal slot is formed therebetween on the interior side thereof.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/693,241 US4053338A (en) | 1976-06-04 | 1976-06-04 | Method of fabricating compressed gas insulated cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1045797A true CA1045797A (en) | 1979-01-09 |
Family
ID=24783890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA279,613A Expired CA1045797A (en) | 1976-06-04 | 1977-06-01 | Method of fabricating compressed gas insulated cable |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4053338A (en) |
| JP (1) | JPS52149384A (en) |
| CA (1) | CA1045797A (en) |
| FR (1) | FR2353935A1 (en) |
| GB (1) | GB1583251A (en) |
| NL (1) | NL7706044A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4110551A (en) * | 1976-10-14 | 1978-08-29 | Electric Power Research Institute, Inc. | Extruded sheath section for compressed gas insulated transmission lines |
| US4256254A (en) * | 1977-03-18 | 1981-03-17 | Electric Power Research Institute, Inc. | Method of manufacturing a welded joint in segmented sheath for compressed gas insulated transmission lines |
| JPS5810927B2 (en) * | 1978-01-13 | 1983-02-28 | 株式会社フジクラ | Pipeline aerial cable and its manufacturing method |
| US4158026A (en) * | 1978-03-13 | 1979-06-12 | Uop Inc. | Combination process for selected aromatic hydrocarbon production |
| US5920032A (en) * | 1994-12-22 | 1999-07-06 | Baker Hughes Incorporated | Continuous power/signal conductor and cover for downhole use |
| JP4580036B1 (en) * | 2009-06-12 | 2010-11-10 | 株式会社神戸製鋼所 | Busbar and connector |
| US20110226503A1 (en) * | 2010-03-17 | 2011-09-22 | Bolin Philip C | Gas insulated busbar particle trap |
| RU2676470C1 (en) * | 2017-11-16 | 2018-12-29 | федеральное государственное бюджетное образовательное учреждение высшего образования "Ивановский государственный энергетический университет имени В.И. Ленина" (ИГЭУ) | High-voltage cable |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2141894A (en) * | 1937-03-19 | 1938-12-27 | Gen Electric | Cable for transmitting electric power |
| US2112740A (en) * | 1937-06-09 | 1938-03-29 | Gen Electric | High tension gas filled cable |
| GB1129908A (en) * | 1965-11-03 | 1968-10-09 | Ass Elect Ind | Improvements relating to polyphase electrical couplings |
| DE2259852A1 (en) * | 1972-12-07 | 1974-06-12 | Kabel Metallwerke Ghh | GAS INSULATED HIGH VOLTAGE CABLE |
| US3864507A (en) * | 1974-02-25 | 1975-02-04 | Aluminum Co Of America | Electrical conductor |
-
1976
- 1976-06-04 US US05/693,241 patent/US4053338A/en not_active Expired - Lifetime
-
1977
- 1977-05-26 GB GB22252/77A patent/GB1583251A/en not_active Expired
- 1977-06-01 JP JP6341477A patent/JPS52149384A/en active Pending
- 1977-06-01 CA CA279,613A patent/CA1045797A/en not_active Expired
- 1977-06-02 NL NL7706044A patent/NL7706044A/en unknown
- 1977-06-03 FR FR7717009A patent/FR2353935A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| GB1583251A (en) | 1981-01-21 |
| FR2353935A1 (en) | 1977-12-30 |
| NL7706044A (en) | 1977-12-06 |
| US4053338A (en) | 1977-10-11 |
| JPS52149384A (en) | 1977-12-12 |
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